Method for spray pickling, polishing and passivating stainless steel composite board and devices thereof

A spray pickling and composite board technology, which is applied in the coating process of metal materials, etc., can solve the problems of poor surface quality and achieve high production efficiency, simple and convenient operation, and fast speed

Inactive Publication Date: 2008-10-01
LUOYANG SHUANGRUI METAL COMPOSITE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the surface treatment can be carried out under the optimal process conditions, it can solve the problem of poor surface quality of stainless steel clad plates after pickling, improve production efficiency, reduce production costs, and reduce pollution

Method used

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  • Method for spray pickling, polishing and passivating stainless steel composite board and devices thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Composite panels with a length of 6m and a width of 3m are placed on the installation frame with the stainless steel cladding facing upwards, and the inclination angle is adjusted so that the composite panel is inclined to the ground at 70-80 degrees. Thick self-adhesive tape is pasted on the side of the composite board, and polypropylene shielding boards are installed on the periphery. A polypropylene liquid spray pipe with a length of 6 m and a diameter of 6 points is fixed on the shield plate with a bracket. And horizontally fix one on the top and one in the middle of the composite board. Drill two rows of holes with a diameter of 2mm at an equal distance of 6mm on the spray pipe, and the distance between the two rows is 4mm, and the center of the holes in one row is located in the middle of the two holes in the other row. For the convenience of operation, a 6-point pressure-resistant rubber tube is used as the infusion tube. The recovery tank is a steel tank lined...

Embodiment 2

[0023] For the stainless steel clad plate that does not require surface brightness improvement, the chemical polishing tank is not used, and the tank can be used as another pickling tank. That is, austenitic stainless steel is pickled in one tank, and martensitic stainless steel is pickled in another tank, and the rest are the same as in Example 1.

Embodiment 3

[0025] The device for pickling, chemical polishing and passivation of three kinds of stainless steels of austenite, martensite and ferrite preferably uses three pickling tanks, and the rest are the same as in embodiment 1.

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Abstract

The invention relates to a method of stainless clad plate spray pickling, polishing and passivating and a device. The device is mainly consisted of a mounting rack (2), a sparge pipe (4), a scaffold (5), a perfusion tube (6), a recovery tank (7), a hot water vat (8), pickling bath (9), a polishing tank (10), a passivating tank (11), a pump (12), a drainage pipe (13), a tap-water pipe (14), an acidproof fluid supply valve (15), a hot water valve (16), an acidproof return liquid valve (17), and a water valve (18). Wherein, the mounting rack is arranged above the recovery tank. The sparge pipe subtended by the scaffold aims at the mounting rack. The sparge pipe is connected with the pump. The hot water valve and three acidproof fluid supply valves are connected in turn in a pipeline connecting the tap-water pipe and the pump. The hot water valve is connected with the hot water vat. Three acidproof fluid supply valves are separately connected with the pickling bath, the polishing tank and the passivating tank. A blind pipeline is arranged above four tanks via the water valve. The water valve is connected with the drainage pipe. One terminal of the blind pipeline is connected with the recovery tank, and the other terminal of the blind pipeline is connected with the hot water vat, the picking bath, the polishing tank and the passivating tank in turn via one water valve and three acidproof return liquid valves.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of metal composite materials, and relates to methods and device configurations for spray pickling, polishing and passivation of stainless steel composite plates. Background technique [0002] The stainless steel clad plate needs to go through explosive cladding, repair welding, heat treatment and other processes in the production process, and thick oxide skin will be formed on its surface. Not only the appearance is not good, but the local residual scale also affects the corrosion resistance of the clad plate. Pickling removes completely. [0003] Generally, stainless steel pickling is carried out in a pickling tank, that is, the workpiece is soaked in the pickling solution, and the oxide film on the surface is dissolved by the pickling solution. After the oxide film is completely removed, the workpiece is taken out, washed and polished with water, and then passivated. When the surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/02C23F3/06C23C22/06
CPCC23G3/00C23G1/02
Inventor 林百春张超
Owner LUOYANG SHUANGRUI METAL COMPOSITE MATERIAL
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